How to come out to parents?

i’ve recently developed feelings for a girl. it’s something new and weird to me. i’ve never been interested to females, i’ve always been into guys. i’m so attracted to her personality that the fact that she’s a girl doesn’t even bother me. she’s a dyke so she looks kind of man-ish. i think that’s part of the reason why it’s not weird to me. she’s the only girl i find attractive. the more i hangout with her, the more i like her. my dad doesn’t support the LGBT community. she comes to my house a lot, my dad just thinks we’re friends. i’m scared of telling him, and him disowning me. i’ve never had feelings like this for anyone else. advice please??